Magazine-feed boiler.



Aw. i. RoYs.

MAGAzmE FEED Boum.

APPUCATIOH FIIED FEB. l5, 1916. y

1,244,3l. y Patented 0st. 23,1917.

WILLIS E. BOYS, OF RICHMOND HILL, NEW YORK;v

MAGAZINE-FEED BOILER.

Speccaton of Letters Patent.

Patented oet. 2s, ieri.

' Application led February 15, 1916. Y Serial No. 78,428.

To all whom t may concern.'

Be it known that l, WrLLrs E. Rove,l a citizen of the United States of America, residing at Richmond Hill, Long Island, New York, have invented a new and useful Mag .ezine-Feed Boiler, of which the following is a specification.

The general objects of my present invention are to provide simple and effective means for automatically feeding fuel to a boiler furnace. y

,A i special object of the invention is to obtain substantially uniform feed of fuel over the grate surface, and rto maintain a substantially even depth of fuelv bed.

VLanother object of the invention is 'to provide a fuel feeding device of the character set forth, capable of ready4 application to furnaces in use at the present time.

ln the accomplishment of these and other objecta' I employ. a fuel distributing head which is 'mounted in the combustion chamber of the furnace above the grate and is provided with distributing troughs extending toA different points over the grate so as to distribute the fuel more or less uniformly over the grate area. The-fuel is fed to this distributing head preferably through a downwardly inclined chuteextending from a suitable supply hopper. To prevent igni tion of the fuel in the feed chute and dis-v tributing troughs, before it actually reaches the fuel bed, I provide the distributing head and troughs with a water jacket. This pre vents premature ignition of the fuel, protects the distribution head from burning out and also provides additional heating surface for the boiler.

Other features and details of construction will become apparent as the specification proceeds, attention being directed to they accompanying drawing, wherein is illustrated a practical and preferred form the invention may take.

In this drawing:

Figure l is a perspective view showing my invention applied to a boiler of the so-called sectional type, the front section of the boiler being omitted so as to show the distributer head in place within the combustion chamber.

Fig. 2 is a part sectional view taken partly on the plane of the line 2 2 of F ig. l to illustrate the manner of applying the apparatus to this type of boiler.

Y Fig. 3 is a sectional view taken substantially on the plane of the line 3-3 of Fig. 2.

Fig. iis a cross sectional view of the distributor head taken substantially on 'the plane of the line dif-4f, Fig. 2.

The boiler illustrated is made up of hollow vertical sections 7 arranged in abutting` relation and suitably connected to provide the proper circulation 'through the different sections. In the particular construction illustrated these sections are arched to provide a combustion space or fire pot V8 above the grate 9.

l .he fuel is supplied from a hopper l1 located, in 'thisinstancd outside `the furnace and supported on the upper end of the inclinedfeed chute l2 which extends on an incline downward into the combustion chamber. This hopper may be braced at the top 'by rods 13 connecting with the hopper and engaged in upstanding members lat which may be formed as lugs on certain of 'the furnace sections. The lower side walls and the outer end walls of the hopper are preferably converged downwardly to the mouth of the feed chute as indicated at 15 to produce proper feeding of the coal or other fuel. The hopper is further provided with a. door 16 at the top thereof which may be hinged as indicated at 17 and this charging .door is made relatively close fitting so as to prevent the escape of gases.

A passage for the entry of the feed chute l2 down into the combustion chamber is providedlin the furnace illustrated by making two of the abutting sections with complementary recesses 20 in their abutting faces whichY as indicated in Fig. 3 form, when the sections are assembled, a passage extending downward on an incline into the upper portion of the combustion chamber. Thev feed chute may be supported in this downwardly inclined passage by providing it with a lug 2l on its under side near the top thereof arranged to bear against the outer surface of the recessed sections and form a stop limiting the downward movement of the chute in said passage. By such means the feed chute is positioned by the mere insertion of the chute in the passage designed to receive it and the hopper may be secured to the chuterby providing it with dependent lugs 22 through which fastenings 23 Aare passed into the top of the chute. At the lower end of the feed chute, insidey the two extending toward each end of the fur-V nace.

rfhe Vdistributing troughsy like the feed chute are also arranged on a downward inoline and this incline is such that the fuel will flow easily but will come to rest as soon as the flow at the mouths of the troughs is checked, or in other words, as soon as the fuel pile on the grate reaches the mouths of the troughs. A fuel bed of any desired depth can therefore be maintained by locating the distributer in the combustion chamber at a point where the flow from the troughs will be checked by the discharge piles when these piles have reached the height desired to be maintained on the grate. By locating the distributor with the mouths of the troughs at a higher level a greater depth of fuel bed will bemaintained and conversely by lowering the distributer a fuel bed of less depth will be maintained. By increasing the number of distributing troughs a more even distribution of the fuel over the grate can be secured.

To prevent burning the dist-ributer and to prevent premature ignition of the fuel in the feed chute or distributing troughs the distributor, including the head portion and the diverging troughs are preferably formed with a. double bottom providing a water jacket 30, and use is made of this water jacket as additional heating surface by 'coupling it up with the heater sections through piping 31 entered into the opposite sides of the distributor head. This piping is utilized also, in this case, as the means for supporting the distributor within the combustion chamber. l

From the foregoing it will be understood that as the coal on the grate is consumed and the level of the nre bed is thereby lowered additional fuel will flow down the feed chute nemers l. In combination with a furnace having hollow walls forming a combustion chamber, fuel distributor located in said combustion chamber, said fuel distributer having a .water jacket in the bottom thereof and piping extending from the water jacket of said distributer to the hollow walls of the furnace and thereby supporting said distributor within the combustion chamber.

2. ln combination with a furnace having a combustion chamber and a passage extending in through the side of the furnace on a downward incline into the combustion chamber, 1 downwardly inclined stationary feed chute located in said passage and supported by the walls of the passage, said feed chute having a lugY on its outer upper end portion engaging with the furnace and limiting the extent of downward movement of the feed chute in the movement passage, a feed hopper on the outer upper end of the feed chute and a fuel distributer in the combustion chamber in communication with the lower inner end of the feed chute.

8. In a device of the character set forth a furnace having a combustion chamber and a grate, a fuel distributer in said combustion chamber having distributing troughs inclined downwardly on an angle ,such that the fuel therein will come to rest when checked by the pile of fuel discharged therefrom and resting on the grat-e, said distributer being mounted with the mouths of the distributing troughs at substantially the height of the fuel bed desired to be maintained on the grate and means for supplying fuel to said distributor.

WILLS E. BOYS.

opies of this patent may be obtained. for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

